HERNDON, VA (Dec. 10, 2003) Deltek, the ERP vendor of choice for project-based businesses, today
announced it has won a $488,000 contract with Telos Corporation, a leading provider of security solutions
to the federal government and private sector. Deltek solutions are deployed by nine of the "Top 10 Federal
Contractors" in 2003, as ranked by Washington Technology Magazine.

"We looked at other solutions, including Oracle, and Deltek provides the greatest value
because we will implement the Deltek suite with virtually no required customization," said Steve
Robinson, Telos Project Manager for the Deltek implementation. "About 80 percent of our business
comes from government contracting and Deltek's extensive experience and in-depth knowledge in this
arena is evident in its out-of-the-box functionality."

Deltek Enterprise™ will provide Telos an integrated solution that includes complete project and
financial control; advanced business intelligence and reporting capabilities and an employee self-service
solution. Deltek will replace the customized systems Telos had been using for over 20 years.

Deltek is recognized as the government contracting industry's preferred provider of front and
back-office ERP solutions. Deltek's government contracting industry install base includes over 60 percent
of the Top 100 government contractors, who collectively generate 80 percent of the nearly $34 billion in
contract revenues reported for the Top 100 in 2003. Deltek's government contracting clients include
Lockheed Martin, Northrop Grumman, SAIC, Boeing, Computer Sciences Corporation, Raytheon, General
Dynamics, EDS, BAE Systems and others.

"We researched solutions in depth to identify an efficient and truly integrated business system
that would provide a reliable and flexible platform that really works the way we work," said Robinson.
"With Deltek, staff members at all levels in our company gain the ability to more effectively execute their
roles and to better understand and react to changing business conditions."

About Telos
Telos Corporation delivers enterprise security solutions and services to customers in the Federal government and private sector. For more information, visit www.telos.com.

About Deltek
With more than 8,000 customers, Herndon, VA-based Deltek is the number-five ranked provider of enterprise resource planning (ERP) solutions and the leader for professional services and projectbased businesses. Founded in 1983, Deltek enables companies to maximize profitability and
productivity, integrating all aspects of their businesses. Deltek focuses on the architecture and
engineering, IT services, management consulting, construction, systems integration and government
contracting markets. Its clients include Bechtel, CACI, Centex, Computer Sciences Corporation, HOK and
Verizon. Analyst firm TechnologyEvaluation declares Deltek "… the ERP leader for professional services
industries and other companies focused on project-related work."